package com.mylearn.myblog.util;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.List;

public class MD5Utils {

	public static String code(String str){
		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
			md.update(str.getBytes());
			byte[] bytesDigest = md.digest();
			int i;
			StringBuffer buf = new StringBuffer("");
			for (int offset = 0 ;offset<bytesDigest.length;offset++){
				i=bytesDigest[offset];
				if(i<0)
					i += 256;
				if(i<16)
					buf.append("0");
				buf.append(Integer.toHexString(i));
			}
			//32位加密
			return buf.toString();
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
			return null;
		}
	}

}
